Airbag control unit with part number 985104766R

What is the function of the airbag control unit 985104766R?

The airbag control unit 985104766R is the central control module for the occupant safety system (SRS) in the Renault Talisman I (model years 2015–2022). It analyzes data from acceleration sensors to precisely and rapidly deploy airbags and seatbelt pretensioners in the event of a crash.

As the “brain” of the passive safety system, this module continuously monitors all connected components, including the various airbags (driver, passenger, side), seatbelt pretensioners, and crash sensors strategically positioned throughout the vehicle’s body.

In the event of a collision, the control unit evaluates incoming sensor signals to determine whether and how extensively to activate the safety systems. Its proper functioning is therefore critical to ensuring the safety of vehicle occupants.

What defects occur with 985104766R?

The most common defect of the control unit 985104766R is the storage of crash data, which can lock the module even without an airbag deployment. A specific fault unique to the Renault Talisman I is error code V010, which results in complete immobilization. Other causes include internal electronic malfunctions.

Following a crash—even a minor impact—the control unit irrevocably writes crash data into its internal memory. This safety feature locks the device to prevent malfunction during subsequent collisions. This condition is often displayed as an “internal error” in the fault memory.

A well-known issue, particularly in the Renault Talisman I, is error code V010. This code indicates that the control unit has been locked, rendering normal operation impossible and triggering the airbag warning light.

Although less frequent, external factors such as damaged cables, loose connectors, or faulty wiring can also produce symptoms resembling those of a defective control unit. Professional diagnostics are therefore essential to pinpoint the exact source of the problem. Similar failure patterns may also appear in related part numbers like 985102320R.

How do you recognize a defect in the control unit 985104766R?

The clearest symptom is a permanently illuminated airbag warning light (SRS light) in the cockpit. This light does not turn off after starting the engine, signaling a malfunction in the safety system. In some cases, communication with the diagnostic tool may also be blocked.

If the airbag warning light remains on continuously, it is a clear indication that the control unit has detected a critical fault. In this state, the entire restraint system is typically disabled, posing a significant safety risk in the event of another accident.

Another technical symptom is loss of communication. When a workshop attempts to read the fault memory via the OBD interface, the airbag control unit may fail to respond, pointing to a severe internal defect.

In which vehicles is the control unit 985104766R installed?

The airbag control unit with part number 985104766R is specifically designed for the first-generation Renault Talisman. At Airbag24, we repair this module for all variants of this model series produced between 2015 and 2022, including the station wagon version.

At Airbag24, repair of the control unit 985104766R is available for the following model:

Renault Talisman I (model years 2015–2022), including the Grandtour (KP_) variant.

Is repairing the control unit 985104766R worthwhile?

Yes—repair is an economically and technically sensible alternative. It is significantly cheaper than a new unit, which research shows can cost up to €250. A repaired unit is a plug-and-play solution that requires no reprogramming and comes with 2 years' statutory liability for defects.

The biggest advantage is substantial cost savings. While repair costs typically fall in the double-digit range, purchasing a new control unit is many times more expensive.

Since the original vehicle data is preserved during repair, the control unit becomes fully operational immediately after installation. There is no need for time-consuming and costly programming or coding at an authorized dealer.

How does the repair of the control unit 985104766R proceed?

The process at Airbag24 is designed for efficiency and safety. After submitting your removed control unit, a professional analysis is performed. The repair includes targeted deletion of crash data (crash reset) and correction of electronic faults, followed by a final functional test. You receive 2 years' statutory liability for defects on the completed repair.

First, a specialized workshop should read out the fault memory to confirm that the defect is indeed in the control unit. The unit is then removed and sent to Airbag24 along with the repair order.

Our technicians perform an incoming inspection and begin the repair process. At the heart of the repair is resetting the stored crash data. If additional electronic faults are present, they are rectified using original‑equipment‑manufacturer‑quality components.

Following successful repair and a final quality check, the control unit is promptly returned to you. It can then be directly reinstalled in your vehicle.